Medicine liquid injection device for injecting plural kinds of medicine liquid without mixing them
First Claim
1. A liquid injector for injecting a liquid into a patient from a syringe having a cylinder member and a piston member inserted slidably into the cylinder member, comprising:
- a patient tube having a leading end connected to the patient;
a plurality of syringe tubes, each of their trailing ends being connected to each of a plurality of the syringes;
tube connecting means for connecting a trailing end of the patient tube to leading ends of a plurality of the syringe tubes;
a syringe hold member for removably holding a plurality of the syringes;
a plurality of syringe drive mechanisms, each of the mechanisms causing each of a plurality of the syringes to perform injection of the liquid by relatively moving the cylinder member and/or the piston member;
a plurality of tube block mechanisms, each of the mechanisms blocking each of a plurality of the syringe tubes to allow opening or closing thereof; and
interlock control means for interlocking operation of a plurality of the tube block mechanisms and a plurality of the syringe drive mechanisms to open only one of the syringe tubes and drive only one of the syringes associated with the opened syringe tube.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention provides liquid injector 100 in which a patient is connected to a plurality of syringes 201, 202 trough patient tube 223 and a plurality of syringe tube 221, 222. When a liquid is injected into the patient from one of syringes 201, 202, syringe tube 222 or 221 connected to the other of syringes 202, 201 is blocked, so that the liquid injected into the patient from the one of syringes 201, 202 does not flow back into the other of syringes 202, 201. Therefore, it is possible to provide liquid injector 100 capable of preventing a backflow of a plurality of kinds of liquids freely injected into a patient.
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Citations
8 Claims
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1. A liquid injector for injecting a liquid into a patient from a syringe having a cylinder member and a piston member inserted slidably into the cylinder member, comprising:
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a patient tube having a leading end connected to the patient;
a plurality of syringe tubes, each of their trailing ends being connected to each of a plurality of the syringes;
tube connecting means for connecting a trailing end of the patient tube to leading ends of a plurality of the syringe tubes;
a syringe hold member for removably holding a plurality of the syringes;
a plurality of syringe drive mechanisms, each of the mechanisms causing each of a plurality of the syringes to perform injection of the liquid by relatively moving the cylinder member and/or the piston member;
a plurality of tube block mechanisms, each of the mechanisms blocking each of a plurality of the syringe tubes to allow opening or closing thereof; and
interlock control means for interlocking operation of a plurality of the tube block mechanisms and a plurality of the syringe drive mechanisms to open only one of the syringe tubes and drive only one of the syringes associated with the opened syringe tube. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification